Average Bench: 54.6% (777th of 1003)

more Based on 4,636 user benchmarks.  Models: C400-MTFDDAK256MAM, C400-MTFDDAC256MAM, MTFDDAK2 MTFDDAK256MAM-1K, Micron C400 RealSSD 2.5" 7mm 256GB, MTFDDAK256MAM-1K, Micron C400 RealSSD 2., MTFDDAK256MAM-1K1, MTFDDAK256MAM-1K12

Average average bench

The Micron C400 RealSSD 256GB averaged 45.4% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Write Speed 59.4MB/s
Avg. 4K Random Read Speed 18MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Micron C400 RealSSD 256GB is 29.3%. This is a relatively narrow range which indicates that the Micron C400 RealSSD 256GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 22.9MB/s
Avg. Sustained Write Speed 186MB/s

Average Bench

(Based on 4,636 samples)
Min Avg Max
323 Read 385 438
50 Write 218 262
85.2 Mixed 228 260
49.2 SusWrite 186 256
56.6% 254 MB/s
Min Avg Max
11 4K Read 18 22.7
33.2 4K Write 59.4 95.7
9.99 4K Mixed 13.6 16.1
76.1% 30.3 MB/s
Min Avg Max
21.5 DQ Read 122 181
50 DQ Write 126 231
15 DQ Mixed 22.9 32.1
44.9% 90 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
87GB free
Firmware: 07TA
SusWrite @10s intervals: 251 246 270 267 262 261 MB/s
Read 401
Write 251
Mixed 250
SusWrite 260
65% 290 MB/s
4K Read 18.1
4K Write 47.5
4K Mixed 13.8
70% 26.5 MB/s
DQ Read 122
DQ Write 115
DQ Mixed 23.6
44% 86.8 MB/s
167GB free (System drive)
Firmware: 08TH
SusWrite @10s intervals: 226 248 252 257 264 255 MB/s
Read 362
Write 260
Mixed 268
SusWrite 250
64% 285 MB/s
4K Read 15.4
4K Write 46.6
4K Mixed 13
65% 25 MB/s
DQ Read 112
DQ Write 105
DQ Mixed 23.5
41% 80.1 MB/s
4,636 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 15,833,945 SSDs tested.

Typical C400 RealSSD 256GB Builds (Compare 5,966 builds) See popular component choices, score breakdowns and rankings.
Gaming 19%
Desktop 54%
Workstation 39%
Jet ski

System: HP Z420 Workstation

EDIT WITH CUSTOM PC BUILDER Value: 63% - Good Total price: $345

Popular C400 RealSSD 256GB systems:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

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How it works

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  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
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Solid State Drive Rankings (Price vs Performance) July 2019 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.


1003 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-8700K $350Nvidia GTX 1070 $400Samsung 850 Evo 250GB $104
AMD Ryzen 5 2600 $127Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $103
AMD Ryzen 7 2700X $248Nvidia GTX 1080-Ti $709Samsung 850 Pro 256GB $97
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 64GB $128
Seagate Barracuda 3TB (2016) $70G.SKILL Trident Z DDR4 3200 C14 4x16GB $606SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Ultra Fit 32GB $12
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